### Are Carbonated Waters Bad for Your Teeth and Health? We've all heard about the dangers of drinking soda, but what about seltzer, sparkling water, soda water, or tonic water? Some people claim that carbonation increases calcium loss in bones, causes tooth decay, and irritable bowel syndrome (IBS), and can make you gain weight. But how valid are these claims? Let's investigate. **Bone Health:** A 2006 study involving 2,500 people found that cola beverages were associated with low bone mineral density in women, but other carbonated drinks didn’t have the same effect. This is because cola contains phosphorus, which can increase calcium loss through the kidneys. **Tooth Decay:** Plain carbonated water without added citric acid or sugar does not cause tooth decay. However, carbonated beverages with added acids and sugars can erode tooth enamel. The carbonation process itself, which involves adding pressurized carbon dioxide to water, does not harm teeth. **IBS and Bloating:** While carbonated water won’t cause IBS, it can lead to bloating and gas, which might trigger IBS flare-ups in sensitive individuals. If you have stomach issues, you might want to avoid carbonated water. **Weight Gain:** Plain carbonated water is a better choice than sugary drinks. However, a small 2017 study found that plain carbonated water increased the hunger hormone ghrelin in men, potentially leading to increased hunger and weight gain. More research is needed to confirm this effect on a larger scale and in women. **Additives:** Not all carbonated waters are created equal. Some bottled seltzers and flavor enhancers contain sodium, natural and artificial acids, flavors, sweeteners, and other additives. These can contain hidden calories and extra sodium, leading to cavities and weight gain over time. **Conclusion:** Plain carbonated water is generally safe for your teeth and health. However, always read the ingredient list to avoid added sugars and acids. For a healthier option, try adding fresh fruits, herbs, or citrus to plain carbonated water for flavor.